Siemens SIMATIC S7-400H System Manual page 420

Technical data
20.4 Technical specifications of the CPU 417–5H PN/DP; (6ES7 417-5HK06–0AB0)
Total retentive data area (incl. bit memories,
timers, counters)
Bit memory


Clock memories
Data blocks

Local data (configurable)

OBs

Number of free-cycle OBs
Number of time-of-day interrupt OBs
Number of time-delay interrupt OBs
Number of cyclic interrupts
Number of process interrupt OBs
Number of DPV1 interrupt OBs
Number of asynchronous error OBs
Number of background OBs
Number of restart OBs
Number of synchronous error OBs
Nesting depth


SDBs
FBs

FCs

SDBs
420
Retentivity, configurable
Preset retentivity
Size
Default
Size
Per priority class
Additional ones in an error OB
Size
Size
Data areas and their retentivity
Total work and load memory (with backup
battery)
16 KB
From MB 0 to MB 16383
From MB 0 to MB 15
8 (1 bit memory byte)
Maximum 16000 (DB 0 reserved)
Number range 1 to 16000
Maximum 64 KB
Maximum 64 KB
32 KB
Blocks
See instruction list
Maximum 64 KB
OB 1
OB 10, 11, 12, 13, 14, 15, 16, 17
OB 20, 21, 22, 23
OB 30, 31, 32, 33, 34, 35, 36, 37, 38
OB 40, 41, 42, 43, 44, 45, 46, 47
OB 55, 56, 57
OB 80, 81, 82, 83, 84, 85, 86, 87, 88
OB 90
OB 100, 102
OB 121, 122
24
2
Maximum 512
Maximum 8000
Number range 0 - 7999
Maximum 64 KB
Maximum 8000
Number range 0 - 7999
Maximum 64 KB
Maximum 2048
System Manual, 03/2012, A5E00267695-11
S7-400H